Most powerful car with the least g/km?

PiKe

PiKe

PiKe

Caporegime
Joined
18 Oct 2002
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Just wondered which manufacturer produces the most powerful car whilst maintaining the least CO2?

Not sure what the best way to work it out either? BHP divided by the g/km to give BHP per g/km? Or just find the most powerful car in the lowest tax band.

This is purely to satisfy curiosity btw.
 
Some other really good cars are the Rolls-Royce Ghost and the Porsche 911 Turbo - around 1.8 HP per g/km of CO2.

One of the worst cars out there is the Chevrolet Matiz 0.8 -around 0.4 HP per g/km of CO2.

Something to bear in mind is that the CO2 measurement is taken on a specific driving cycle with specific set distances and speeds. Larger more powerful engines can move the car to these speeds effortlessly, whereas a smaller engine will have to be worked harder. The figure is PEAK HP per NON-PEAK g/km of CO2, so an engine that is not being worked hard has an advantage if it can cleverly control emissions at low power - the CO2 represents what happened driving from A to B, whereas the peak HP represents something that never happened during that A to B.
 
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Lexus 600h must be close, right? Over 2hp/g of co2 (going by the figures on it's big advertizing image on the site!). Although that's obviously distorted by the hybrid motor!

Veyron is pretty close to 2hp/g on the combined cycle too.. 574g! 999g in town though, ahahaha.
 
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Gotta be an electric car charged at home by one of those expensive solar setups.... the solar install will cost you about £10,000+ but you'll never have to pay for fuel and the car won't put out any more co2. Of course then there's always the debate about how much co2 was put out to make the car, and the solar panels, etc. You can't win. :)
 
Stickman said:
Gotta be an electric car charged at home by one of those expensive solar setups.... the solar install will cost you about £10,000+ but you'll never have to pay for fuel and the car won't put out any more co2. Of course then there's always the debate about how much co2 was put out to make the car, and the solar panels, etc. You can't win. :)
Click to expand...

Sorry I didn't state but lets just keep things to combustion engines for now.
 
Most Co2... depends how big you're allowing as car I guess... obviously the heavier it is the worse it will usually be. For instance, Americans call a Hummer a car but we'd probably call it a truck.
 
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